Blue Notes · Umpire Grade2026-08-20
“Pitchers found a little extra real estate.”
Umpire Grade
94.3% accurate
Run Favor
runs, ATL
ABS Overturns
of 3 reviewed
What this shows — how Ron Kulpa called the 140 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 132 right. Below, only his misses are plotted, alongside every pitch the ABS (Automated Ball-Strike System) reviewed on a challenge.
The zone, as he called it
strike called ballball called strikeABS overturnedABS upheld
The calls that moved the game
- 1-0.13▼3 · 1-1 ball called strike
Sam Antonacci vs Grant Holmes - 2-0.13▼6 · 1-0 ball called strike
Sam Antonacci vs Grant Holmes - 3-0.13▼9 · 1-0 ball called strike
Munetaka Murakami vs Raisel Iglesias
Run impact from the count run-value table: a missed strike three is worth far more than one on 3-0.
ABS — the Automated Ball-Strike System
3 pitches went to the robots · 2 overturned (ump overruled) · 1 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.
- 1Sam Antonacci — ump said ball, robot ruled strike: overturned.
- 2Chase Meidroth — ump said strike, robot ruled strike: upheld.
- 3Mauricio Dubón — ump said ball, robot ruled strike: overturned.
Our tracked-rulebook zone matched the ABS ruling on 1 of 3 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.